Eating plenty of green vegetables keeps elderly people’s brains up to 11 years younger, a study claims.
Researchers followed 960 healthy pensioners with an average age of 81 over five years.
They found those who had at least one portion a day of spinach, kale and lettuce had better mental capacity than those who never or rarely ate them.
In thinking skills and memory tests, their brains were the equivalent of 11 years younger, US researchers found.
Experts believe naturally-occurring compounds in food rich in vitamin K slow mental decline.
Martha Clare Morris, of Rush University Medical Center in Chicago, said: “A daily serving of green, leafy veg may be a simple way to foster brain health.”